Still.



` PATB'NTED JULY so, 1907. F. J. sToKBs.

str1-L1..4 APPLIOATION FILED DEO. 11I 1906.

PATENT euries.

FRANCIS J. STOKES, OF PHILADELPHIA, PENNSYLVANIA.

STILL.

TNO.' 861,485.

To all 'whom it may concern:

Be it known that I, FRANoIsI. SToKns, a citizen of the United'tates, and a resident of Philadelphia, inl the county of Philadelphia and State of Pennsylvania,

have invented a certain new and useful Still, of which the following is a specification. v

Objects of the present invention are to provide a still which shall be simple in Construction and reliable in operation and adapted especially for supplying distilled water for hospital, domestic and other uses; to so construct and arrange the parts of the still that gases and vapors may escape and be driven from the raw water or water which is to be purified by distillation; and to permit of the proper overow of condensing water and at the same time maintain a supply of feed water exposed to the air and in position for securing the maximum quantity of heat from the distilled water, whereby the feed water is highly'heated, vapors and gases are expelled therefrom, and material economy and eciency in operation'attained.

To these and other ends hereinafter set forth'the invention comprises the improvements to be presently described and finally claimed.

Infthe 'accompanying drawings, Figure l, is a central i sectional view of as till embodying featurcsofthc invention showing one of the threearms in section and oneA in elevation, the third being absent from the view because it is a sectional view, and Fig. 2, is a sectional view illustrating a section of the arm which is shown in elevation in Fig. 1, that is, the arm 14.

In 'the drawings l, is a tubular` casing havinga dis charge outlet 2, at itsbottom and into the base of which raw water is introduced as at 3. This casing is open at Aits top, as at `4, for the escape of gases and vapors from the rawwater into the air prior to the introduction of The casing l, is`shown as supported by means of a bracket 5, which may be lsecured Vto the wall 6. However, the casing may obviously be supported by other means and while itis shown as of circular cross-section, suchv shape is not essential, though no doubt preferable.

7, is a boiler having aconcavity 8, in its base arranged co-axially above the open end 4, ofthe casing. In the bottom oi the concavity is an opening as at 9, leaving an inturned annular flange.

10, is aheating coil through which the heating medium may be caused to circulate by way of the connections 11 and 12. v i

13, and 14, designate armshaving spaces between them and extending from the casing 1, to the boiler. In the device illustrated in the drawings there are three such arms, although only two of them sho win the drawings and the existence of the spaces'between them i affords egress for the vapors and gases that are expelled at the open top of thescasing 1.

15, is a feed connection from the.top'ofvthe casing .1,

Specification of Letters Patent. Application filed December 11,1906. Serial No. 347.298.

Patented July 30,1907.

to the bottom of the boiler. In the apparatus shown in the drawings, it is formed through the arm 13.

` v16, is an overflow connection .from'the casing beneath the-top thereof to above the water line of the boiler and thence downward to a suitable connection 17. 'This overflow connection is shown as formed through the arm 14 and vented as at a. 4 v v 18, are condensing tubes projecting above into the boiler and sealed at the places where they pass through a tube plate 19, that rests on top of the concavity 8, or

In use rawA water risesthrough the casing 1 and in v doing so is heated by the heat from the steam which is condensed in descending through the tubes 18. The excess of raw water escapes through the overflow connection 16, which by reasonl of its rise or hump fixes the level of the water in the boiler, carries off. any sur- -the top of the casing l, a zone or region of boiling water. Hot water from this vzone or region is led by way of the feed connection 15, to supply 4the boiler and as hasibeen already intimated gases or vaporsA which escape from the hot water at the top of -the casing 1, pass away from the apparatus through the space between the top of the casing 1, and thewalls of the con cavity of the boiler and past the supporting arms. The inverted U-shaped overflow 16, communicates With the feed water space below the top of the casing, so that the overflow escapes from below the top of the casing; thus there remains a supply of water above the entrance to the overflow and this water is highly heated and drawn upon to feed the still by way of the passage. l5. From this highly heated water vapors escape at the open end of the casing l, into the concavity 8, and from the concavity they may descend between the arms 13 and 14, and the alim not shown;v

Obviously changes may be made in-details of con struction within the language of the claims so that the invention is not limited to the precise details of con'- struction and arrangement illustrated and above described, but i What I claim is 1.v A distilling apparatus comprising a tubular 'casing having a discharge' outlet at its'bottom and into the base of which ruw Water is admitted and which is opento the air at its top for the escape of gases from the Water, a boiler having .a concavity in its base arranged co-nxally above the open end of the casing affording space between the boiler and the top of the'casng for the escape of the gasesY arms having spaces between themnnd extending from the casing to the boiler, a feed connection from'the top of the casing to the boiler, an overflow connection from the casing beneath the top thereof to' above the rmaintained for the feed supply, steam condensing tubes projecting into the boiler andsealed through the top of the concavitvlv and a tube plate' near the bottom of the casing and through which the tubes are sealed, substantilly as described.v

condensing tubes projecting from above the open top of the casing and penetrating the boiler, and a tube plate near the bottom of the casing. and through which the tubes are sealed, substantiallvas described.

3. A distilling apparatus comprising `a casing having a discharge outlet. at its bottom and into the b'ase'of which raw water is admitted and which is open at lts top Yfor the escape of gases and vapors, a boiler arranged cofaxially above the open end of the casina; arms extending from the casing't'o the boiler and of which one has formed in it a feed connection and another vhas formed in itan overdow' connection, condensing tubes projecting above the end of the casing into the boiler, and a tube plate near the bqttom of the casing and through whchthe tubes are sealed,

substantially as described.

4. A distillingI apparatus comprising 'a tubular casing having a discharge outlet at tsbottom and into the base of which raw water is admitted and Which'ls open at 'its l ing in the concavity, condensing' tubes sealedA through saidtube plate, and a tube plate near the bottom of the casing through which the tubes are sealed, substantially es described.

In testimony whereof-I havebereunto signed my name.'

FRANcIs 5. siroKns. 'L Witnesses:

FRANK E. FRENCH, A. B. STOUGBTON.- 

